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Crazy boy [7]
3 years ago
7

When explaining about structural classifications to a group of students, the instructor discusses the peptides and proteins. The

instructor talks about small hormones and hormones as large and complex as growth hormone (GH), which has approximately how many amino acids involved?
Chemistry
1 answer:
stepladder [879]3 years ago
5 0

Answer:

There are approximately 200 amino acids.

Explanation:

Proteins are usually larger than peptides. In addition, proteins contains amino acids which are about 50 and more than while the amino acids in peptides are just between 2 and 50. On the other hand, growth hormone which is also known as somatotropin is a type of peptide cell regeneration, growth, and reproduction. The number of amino acids in the growth hormones are approximately 200.

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Acetic acid is a weak acid with a pKa of 4.76. What is the concentration of acetic acid in a buffer solution of 0.2M at pH 4.9.
masya89 [10]

Answer:

0.084 M

Explanation:

Using the Henderson-Hasselbalch equation for a buffer ( a buffer is solution contain a weak acid and it conjugate base; the solution resist change in pH)

pH = pKa + log ( base/acid)

4.9 - 4.76 =log ( base / acid)

10^0.14 =  ( base / acid)

1.38 = (base / acid)

since there is 0.2 M in the buffer solution

the concentration of acid =  \frac{1}{(1+1.38)} × 0.2 = 0.084 M

6 0
2 years ago
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Wittaler [7]

Answer:

Explanation:

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5 0
3 years ago
What is the formula of the compound formed between the potassium ion and the sulfide ion?
KIM [24]
The formula for K+ and S-2 is K2S because you need 2 potassium ions to balance out the sulfide ion
4 0
3 years ago
Why is it better to use deionized water in chemistry experiments
Leno4ka [110]

Answer:

Laboratories use both distilled water and deionized water as controls in experiments. Deionization removes only non-charged organic matter from the water.

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Distilled water removes even more impurities than deionization does, if the water undergoes a filtering process before boiling and distillation.

6 0
2 years ago
what is the half life isotope if after 21 days you have 31.25 g remaining from a 250.0 g starting sample size?
alexgriva [62]

250 --> 125 --> 62.5 --> 31.25


each arrow equals one half life, so 3 half lives


14 days/ 3 half lives =


4.67 days = half life

3 0
3 years ago
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